.disHeader{
  padding-left: 275px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  /* background-color: #C20C0C; */
}
.disItem{
  margin: 0 20px;
  color: #fff;
  font-size: 12px;
  padding: 6px 0;
  cursor: pointer;
  position: relative;
}
.disTop_jiantou{
  position: absolute;
  top: -20px;
  right: 10px;
  border: 10px solid #C20C0C;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid transparent;
}
.disItem_text{
  padding: 2px 11px;
}
.disItem_text:hover, .isOn{
  background-color: rgba(0, 0, 0, 0.3);
  border-radius: 40px;
  text-align: center;
}